Formosa is one of the worlds largest petrochemical company headquartered in Taiwan. Formosa is a growing, vertically-integrated supplier of plastic resins and petrochemicals. Formosa Plastics offers a full line of polyvinyl chloride (PVC), acrylonitrile butadiene styrene (ABS), general purpose polystyrene (PS) other petrochemicals that deliver the consistency, performance and quality that customers demand.